.) initialize CMAKE_INSTALL_PREFIX after CPACK_PACKAGE_NAME has been initialized

.) a cache variable will/can always be overwritten by command-line or cache settings
.) use CMAKE_INSTALL_PREFIX instead of hardcoded '/opt/domiticz'

Author: gms1

CMakeLists.txt

@@ -501,18 +501,6 @@ IF(CMAKE_COMPILER_IS_GNUCXX)
   ENDIF(USE_STATIC_LIBSTDCXX)
 ENDIF(CMAKE_COMPILER_IS_GNUCXX)
 
-# If it wasn't overridden from command line / cache.
-if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
-  set(CMAKE_INSTALL_PREFIX "/opt/${CPACK_PACKAGE_NAME}" CACHE PATH "Install path prefix, prepended onto install directories." FORCE)
-endif(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
-
-install(TARGETS domoticz DESTINATION /opt/domoticz)
-install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/www DESTINATION /opt/domoticz USE_SOURCE_PERMISSIONS)
-install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/License.txt DESTINATION /opt/domoticz)
-install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/History.txt DESTINATION /opt/domoticz)
-install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/scripts DESTINATION /opt/domoticz USE_SOURCE_PERMISSIONS)
-install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/Config DESTINATION /opt/domoticz USE_SOURCE_PERMISSIONS)
-install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/updatedomo DESTINATION /opt/domoticz PERMISSIONS OWNER_EXECUTE OWNER_WRITE OWNER_READ GROUP_EXECUTE GROUP_READ)
 
 # build a CPack driven installer package
 INCLUDE(InstallRequiredSystemLibraries)
@@ -542,6 +530,16 @@ SET(CPACK_DEBIAN_ARCHITECTURE ${CMAKE_SYSTEM_PROCESSOR})
 
 INCLUDE(CPack)
 
+set(CMAKE_INSTALL_PREFIX "/opt/${CPACK_PACKAGE_NAME}" CACHE PATH "Install path prefix, prepended onto install directories.")
+
+install(TARGETS domoticz DESTINATION ${CMAKE_INSTALL_PREFIX})
+install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/www DESTINATION ${CMAKE_INSTALL_PREFIX} USE_SOURCE_PERMISSIONS)
+install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/License.txt DESTINATION ${CMAKE_INSTALL_PREFIX})
+install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/History.txt DESTINATION ${CMAKE_INSTALL_PREFIX})
+install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/scripts DESTINATION ${CMAKE_INSTALL_PREFIX} USE_SOURCE_PERMISSIONS)
+install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/Config DESTINATION ${CMAKE_INSTALL_PREFIX} USE_SOURCE_PERMISSIONS)
+install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/updatedomo DESTINATION ${CMAKE_INSTALL_PREFIX} PERMISSIONS OWNER_EXECUTE OWNER_WRITE OWNER_READ GROUP_EXECUTE GROUP_READ)
+
 INCLUDE(TestBigEndian)
 
 TEST_BIG_ENDIAN(BIGENDIAN)